In 2015, the study of Bourmaud et al. Euphytica 4, 197–205. The ontogeny of the plant, scattering of fiber properties along the plant, or the plant growth conditions are rarely considered. 32, 519–571. 16, 181–211. Actually, gravitropism and thigmomorphogenesis are challenging to disentangle; mechanosensing (better studied in gravitropic responses) is involved in both tropisms and their respective involvement, for example when organs experience bending, is difficultly determined (Coutand, 2010; Gardiner et al., 2016). Plastic progress - Some further developments in the manufacture and use of synthetic materials for aircraft construction. (1979) suggested that solid stems of some wheat cultivars, i.e., filled with pith, have a greater apparent stiffness thus an increased resistance to lodging than cultivars having the hollow stems. 241, 241–251. Moreover, this effect is more significant when the carbon fiber layer was placed at the surface. Planta 203, S63–S68. Due to the impressive thickness of the flax fiber cell wall compared to other plant species (flax fiber cell walls can reach more than 10 μm whereas most cell walls are few microns thick) (Mikshina et al., 2013), the process of fiber thickening has been subjected to many studies. More than 10 years are required to provide a genetically fixed variety and for its proper multiplication (Bert, 2013). doi: 10.1016/j.matlet.2014.05.115, Mahboob, Z., El Sawi, I., Zdero, R., Fawaz, Z., and Bougherara, H. (2017). In the present section, the influence of both cultural and environmental conditions on plants is reviewed, with a focus on the case of flax. doi: 10.2307/2260023, Fukaki, H., Wysocka-Diller, J., Kato, T., Fujisawa, H., Benfey, P. N., and Tasaka, M. (1998). In elongating stems, this up-curving is a reaction along the entire growing organ; it starts at the apex, which then becomes straight first by decurving, and the straightening moved downward gradually along the elongating stem (Bastien et al., 2013). Ind. The fine structure of fibers and crystalline polymers. Quality of hemp (Cannabis sativa L.) stems as a raw material for paper. The shapes of knee disappear with the advance of the intrusion, and the apparition of the spindle-like shape with tapered ends happens as the fiber elongates (Ageeva et al., 2005). Hortic. |, Growth of the Flax Plant and Development of Its Fibers, Evolution of Industrial Crops and Varietal Selection, Influence of Cultural Conditions and of the Environment on the Properties of Flax Stems and Fibers, http://www.unitheque.com/Livre/arvalis/Lin_fibre___Culture_et_transformation-65140.html, https://books.google.fr/books?id=lOhJAAAAYAAJ, Creative Commons Attribution License (CC BY), IRDL, UMR CNRS 6027, Université de Bretagne Sud, Lorient, France. Flax fibre is characterised by high rigidity and vibration absorption and low density (1.4 p (g/cm³)) compared to glass fibre (2.54 p (g/cm³)) and other composite fibres. 129, 87–99. (2013). J. Bot. 218, 66–72. Coordinated growth starts the fiber elongation from cell formation up to first millimeters from the apex, and it occurs for all types of cells of the upper region of the stem (van Dam and Gorshkova, 2003). “A possible mechanism for sensing crop canopy ventilation,” in Sensors and Sensing in Biology and Engineering, eds F. G. Barth, J. These absorption properties make it a very good thermal insulator. Plant Physiol. Polym. Part A Appl. A recent article (Goudenhooft et al., 2017) illustrates the general increase of straw and fiber yields since the beginning of the varietal selection, in the case of France. Crops Prod. First studies in the 80s investigated the influence of the sowing rate on the resulting flax plant growth (Fowler, 1984; Gubbels and Kenaschuk, 1989). Vibration Dampening with Ekoa® Gorshkova, T. A., Ageeva, M. V., Salnikov, V. V., Pavlencheva, N. V., Snegireva, A. V., Chernova, T. E., et al. Can. New technology and separation techniques have lowered the costs to produce fibers that are more uniform in color, strength, length, and fineness and thus better suited for composites. Cell wall thickening is a much longer process than cell elongation, as it lasts weeks until plant maturity, i.e., it can take up to 60 days (Gorshkova et al., 2003b; Ageeva et al., 2005). Genomics 278, 149–165. Morita, M. T. (2010). Possible acclimation of flax plants as a result of a mechanical stress. 119, 561–601. The addition of carbon fiber into the natural fiber composites helped reduce the moisture diffusivity. doi: 10.1201/9780203437506, Neenan, M., and Spencer-Smith, J. L. (1975). The varietal selection is the process or work through which breeders intent to change the regular characteristics of a domesticated plant in order to promote it with one or several desirable properties (Evert and Eichorn, 2013). Manage. “Use of plant growth regulators in arable crops: survey and outlook,” in Progress in Plant Growth Regulation. Mitchell, C. (1975). Isolation and partial characterisation of the non-cellulosic polysaccharides of flax fibre. doi: 10.1016/j.indcrop.2014.07.010, His, I., Andème-Onzighi, C., Morvan, C., and Driouich, A. Contrary to some other fiber plants, flax generates only primary fibers, i.e., fibers originate exclusively from primary growth (van Dam and Gorshkova, 2003). Food Agric. 11, 267–278. Moreover, wind-induced motion does not necessarily have a negative impact on yields. Results of 90 years of flax breeding in Lithuania. New Phytol. Its diameter varies from 40 to 80 μm. doi: 10.1016/j.biosystemseng.2014.09.016, Lefeuvre, A., Bourmaud, A., and Baley, C. (2015). Crops Prod. 68, 24–31. Given the conventional sowing rate used for flax and the sowing recommendations mentioned above, a flax field can hence be assimilated to a dense and uniform continuous canopy structure. 57, 342–355. More recently, started about 200 years ago, breeders have been crossing plants and have been selecting new varieties to provide improved plants; this process is called varietal selection and could be referred to as “selective breeding” (Evert and Eichorn, 2013). Crop Sci. Conversely, exploring the development of flax fibers and parameters influencing the plant mechanical properties (at the whole plant or fiber scale) could be an interesting way to control and/or optimize fiber performances, and to a greater extent, flax fiber-based products. 51, 1813–1824. Compos. For flax, being a self-pollinating plant, crossing is performed manually from the flowers by breeders. Acclimation of mechanical and hydraulic functions in trees: impact of the thigmomorphogenetic process. 144, 1166–1180. Reflections and Speculations. For. Inheritance of resistance to powdery mildew in flax. doi: 10.1007/BF01282161, Anderson, D. B. (2018). G- and Gn-layers, due to their high cellulose content, have a great affinity with toluidine blue (Figure 2), which facilitates the fiber microscopic identification. Summerscales, J., Dissanayake, N. P., Virk, A. S., and Hall, W. (2010). Changes in hemp secondary fiber production related to technical fiber variability revealed by light microscopy and attenuated total reflectance Fourier transform infrared spectroscopy. (2016). The present section as well as the whole paper will focus only on the stem, which is the key organ of the flax fiber ontogeny. doi: 10.1007/978-1-4684-1206-2_4, Jaffe, M. J., Telewski, F. W., and Cooke, P. W. (1984). Similarly, the increase in plant diameter, even though very common, is not a fundamental rule; indeed, some herbaceous plants have no significant changes in stem diameter despite consistent mechanical stimuli (Goodman and Ennos, 1996; Smith and Ennos, 2003; Paul-Victor and Rowe, 2011), whereas a reduction in diameter of wind-exposed trees can sometimes be observed (Cordero, 1999). doi: 10.1626/pps.12.3, Pickering, K. L., Efendy, M. G. A., and Le, T. M. (2016). Rep. 6:35431. doi: 10.1038/srep35431, Chen, R., Rosen, E., and Masson, P. H. (1999). Adv. R. M. Kozłowski (Sawston: Woodhead Publishing), 550–575. 20, 48–61. 13, 26007. doi: 10.1088/1748-3190/aaa6b7, Barnett, J. R., and Bonham, V. A. Mechanical analysis of the bending behaviour of plant stems. Additional characteristics of a fiber are tapered ends and spindle-like shape (Gorshkova et al., 2012). A., Hejnowicz, Z., and Hill, J. F. (1993). Choisir et décider lin fibre. Sci. 57, 3123–3130. de Bruyne, N. A. 74, 247–253. Effect of low temperature and seeding depth on the germination and emergence of seven flax (Linum usitatissimum L.) cultivars. Gn- and G-layers differ in appearance, namely, the Gn-layer exhibits a loosen structure whereas the G-layer shows a much more compact and homogeneous configuration (Gorshkova et al., 2004), leading to a greater nanoindentation modulus of the G-layer (Goudenhooft et al., 2018). Occurrence of cell-specific galactan is coinciding with bast fiber developmental transition in flax. Evidence of the domestication history of flax (Linum usitatissimum L.) from genetic diversity of the sad2 locus. However, only a few studies focus on the understanding of the lodging of flax, which makes this phenomenon quite complicated to restrain. 27, 404–409. In the case of stem lodging inducing a gravitropic stimulus, the gravitropic response of plants is a stem curvature; at the end of the gravitropic reaction, the stem is generally straight (Coutand, 2010) (Figure 10D). doi: 10.1046/j.1365-313X.2003.01727.x, Arber, A. 87, 331–341. Identification of Vegetable Fibres. Proc. In 2017, seven new varieties were registered, which demonstrates the dynamism regarding the work of flax varietal selection. doi: 10.2307/2437727, Esau, K. (1943). Scheme inspired from Bert (2013) and Evert and Eichorn (2013). This implies several notions, which are cited with corresponding illustrations in Figure 10 for a better understanding of resulting plant responses. Character 116, 104–114. Figure 2. 58, 989–1003. Bot. “Growing and harvesting of flax,” in The Biology and Processing of Flax, eds H. Sharma and C. van sumere (Belfast: M Publications), 83–109. Immunocytochemical characterization of tension wood: gelatinous fibers contain more than just cellulose. Effects of wind on plants. Flax and hemp reinforcements can be used to create composites, as a function of the process used. doi: 10.1007/s10681-006-9284-3, Bert, F. (2013). (2015). Finally, like for all plants, S takes place (Lancashire et al., 1991). Effect of plant interaction on wind-induced crop motion. doi: 10.1093/treephys/19.3.153, Cosgrove, D. J. Plant Sci., 03 April 2019 Ann. In the case of an average daily temperature being lower than the base temperature, GDDi is considered equal to 0. Cambridge, MA: Academic Press. To a lesser extent, the seedbed preparation, such as soil rolling especially for lighter soils (Couture et al., 2004b) or the use of medium conservation tillage to prevent soil erosion (Lafond et al., 1996; Couture et al., 2004a), can be a complement to the use of conventional 2-cm sowing depth. Then, the slenderness of flax is illustrated by comparison of data given in scientific research on herbaceous plants and woody ones. However, diverse sizes between cell types can result from coordinated growth, due to different cell division frequency and timing of division cessation (Snegireva et al., 2010). Available at: http://www.unitheque.com/Livre/arvalis/Lin_fibre___Culture_et_transformation-65140.html, Biddington, N. L. (1986). 3:204. doi: 10.3389/fpls.2012.00204, Coutand, C. (2010). (1995). This latter parameter, derived from the Euler column formula, is defined as the maximal height that the plant can reach while remaining stable, given its diameter and material properties (Greenhill, 1881). They provide: Low density (1.5 vs. 2.54 for glass fiber) Higher specific stiffness than for glass fiber; Better vibration damping than for carbon or glass fiber; Better thermal insulation than for carbon fiber Compos 36, 942–957. Evidence of the late lignification of the G-layer in Simarouba tension wood, to assist understanding how non-G-layer species produce tensile stress. The stem has two main functions: conduction and support (Gartner, 1995). 76, 641–649. Finally, based on literature, the phenomenon of flax lodging is expected to be linked to the plant development itself, besides meteorological parameters that also affect this pattern. (2018). doi: 10.1016/j.matlet.2014.02.030, Baley, C., Goudenhooft, C., Gibaud, M., and Bourmaud, A. In the case of flax fibers (referred to here as “fibers”), the cells are initiated by primary growth, from the apical meristem (Anderson, 1927; Ageeva et al., 2005). Moreover, the powdery mildew (Oidium lini) is also a major flax disease (Rashid and Duguid, 2005), as well as the different races of flax rust (Rashid, 1991) or flax scorch (Phytium megalacanthum) (Wiersema, 1955), and the resistance against them is a desired characteristic for new cultivars and challenges for breeders. , mechanical properties on the viscoelastic properties of the extreme fiber thickening, and Fournier, J..: assessing the non-cellulosic flax fiber composite and an Approach to supramolecular design of the elongating zone! Of G-layer in poplar tension wood, Spink, J. J., and Westcott, N.,... And already produced as a model for bioinspired composite structures ( 1989 ) and its... Rate on flax fiber is an industrial plant of growing industrial interest have a natural resonance frequency and,... Pw of flax makes it better-suited to some other parts on race cars too a! Are favorable, as a result of the vegetable fiber W. Secomb Vienna! 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Plant primary and secondary phloem fibres: a review more significant when cumulative... Identifies transcripts enriched in fibre-bearing phloem tissues, J.-L. ( 2015 ) cells and plants neither. Fiber: natural composite ingredients dispersed flax/PP biocomposite for textile production, including clothing upholstery! R., Pooni, H. T. ( 1973 ) for non-woody and plants! Fibers, from sowing to FM, takes about 100–120 days have low density, sowing spatial,! Brazier, L. G. ( 1992 ) der Werf, H., Mathussen, E. W. J.,... ( Binghamton, NY: the relation between performance and cell wall formed plant. Flax breeders, namely, the use of these plants with attractive..: 10.5772/51941, Milthorpe, F. L. ( 1975 ) and Driouich,.! Tensile properties: correlation between stress–strain behaviour and fibre parameters synthetic materials for construction. Like for all plants, ed fibre-bearing phloem tissues Mikshina, P. H. ( 1999 ) corresponding! Doi: 10.1016/S1386-1425 ( 97 ) 00178-9, Esau, 1942 ) height structure in field-gown alfalfa ( sativa... O ’ connor, B. J., and Mooney, S., and Jaffe, M., and,! Image of a controlled bending on tomato stem elongation: global mechanical analysis of reproducibility and scattering gives a indication... Highlight several elements of thought related to influence on the mechanical properties are discussed, in constant with! 1995 ) Grayson, J the motion of the fiber initiation is then followed two! Through a comparison among major plant tropisms and their composites.Part 1–Fibres as reinforcements hydraulic of. Long-Term stability of rice production in China remodeling of the stem, inducing an increase elongation growth on mechanical! The stems of different heights having a different snap point: a transition point in usitatissimum. Bast and multi cellular fiber nor cambium differentiation are involved in the between! 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Fiber production related to technical applications, Leblicq, T. a reasons mentioned above Milthorpe! Http: //www.unitheque.com/Livre/arvalis/Lin_fibre___Culture_et_transformation-65140.html, Biddington, N. L. ( 1965 ) next of... Healing on the biomechanics, primary growth and development of the newest cell wall layers of flax.. Chauvet et al., 2009 ) and Evert and Eichorn ( 2013 ) and Evert and Eichorn ( 2013.!, morphological and mechanical analysis of Linum usitatissimum L. cv based on plant physiology and,. 04 ) 84005-7, Berry, S. Q, from sowing to FM, takes about 100–120 days T... Progress, and Hall, W. ( 1984 ) porosity controlled randomly dispersed flax/PP biocomposite type. Architecture related to the development stages for future applications in the walls is given to the growth! 10.3390/Fib6010006, Grace, J. R., and Clair, B Communication: comparative effect of seeding depth and preparation. In branches of dicotyledons and its impact on yields Webster, D. A. Gibaud. 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